I'd go 8x. My opinion is this: with 8x or even 7x I can see anything I need to "locate."

If I need more power to really figure out if it's a critter with enough horns to make me want to shoot it, then I don't need more power at all--it's actually a dink and I'm trying to convince myself.

In other words, once I've spotted a buck, I've rarely even needed binos to decide if he was big enough or not. The big ones, are. Even with the naked eye.